Datasheet > RT8250GSP

RT8250GSP

更新时间： 2023-12-18 00:00:00

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
12页	206K
描述
IC REG BUCK ADJ 3A SYNC 8SOP

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RT8250GSP 数据手册

RT8250

Electrical Characteristics

(V_IN= 12V, T_A= 25°C unless otherwise specified)

Parameter

Symbol

Test Conditions

V_EN= 0V

Min

Typ

0.3

Max

Unit

μA

Shutdown Supply Current

Supply Current

V_EN= 3 V, V_FB= 1V

4.75V ≤ V_IN≤ 23V

ΔIC = ±10μA

0.7

1.2

Feedback Voltage

V_FB

0.911 0.925 0.939

Error Amplifier Transconductance

High-Side Switch On-Resistance

Low-Side Switch On-Resistance

High-Side Switch Leakage Current

G_EA

1250

100

μA/V

mΩ

μA

R_DS(ON)1

R_DS(ON)2

V_EN= 0V, V_SW= 0V

Min. Duty Cycle

V_BOOT– V_SW= 4.8V

Upper Switch Current Limit

5.5

1.4

5.2

Lower Switch Current Limit

From Drain to Source

COMP to Current Sense

Transconductance

G_CS

A/V

Oscillation Frequency

f_OSC1

300

340

110

380

kHz

Short Circuit Oscillation Frequency f_OSC2

V_FB= 0V

Maximum Duty Cycle

Minimum On Time

D_MAX

t_ON

V_FB= 0.8V

200

Logic-High

Logic-Low

V_IH

2.7

EN Threshold

Voltage

V_IL

0.4

Input Under Voltage Lockout

Threshold

Input Under Voltage Lockout

Threshold Hysterisis

V_INRising

3.8

4.2

4.4

200

Soft-Start Current

Soft-Start Period

Thermal Shutdown

V_SS= 0V

μA

°C

C_SS= 0.1μF

T_SD

150

Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for

stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

Note 2. θ_JAis measured in the natural convection at T_A= 25°C on a high effective thermal conductivity four-layer test board of

JEDEC 51-7 thermal measurement standard. The case position of θ_JCis on the exposed pad of the package.

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.

www.richtek.com

DS8250-05 March 2011

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